Twist tube for use in ring-spinning machines



J. E. WENZEL TWIST TUBE FOR USE IN RING SPINNING MACHINES Filed Sept. 26 1925 Wi'vfneaaea: A Y inveziiajt- %M 75 Jlzlz wlrmz.

Patented Feb. 1, 18.27.

JULIUS 'EMIL anemia, or AUE, sesame, assfenoniio BIRD/IA nnn's'r sesame,

rennin anrinnensnmscnar'r, or A'UE/ERZGEBIEGE;

'jwr's'r 'r'n-n'n non use IN nine-estuarine Mam-nuns.

Application filed September This invention relates to improvements in twlst tubes used in con unction wlth rlng spinning machines and designed to impart a preliminary twist to the sliver or yarn before the same is subjected to the drawing and ring spinning action. In such twist tubes it has been proposed to provide an air blast or current which is intended to assist in collecting the fibres and incorporating them in the twist. This air blast has hitherto been directed eitherradially or aiiially into a rotating twist tube which thereby tends to cause aswirl of the air and interferes with the proper collecting action of the-air blast.

The fibers in the process of being incorporated in the yarn twist, under the air blast action, are apt t0 become caught in the rotating parts and it is therefore advisable that the yarn or sliver should have received most of its twist and been subjected to the collecting action of-the air-current priorto coming to the actual rotating parts. It is also necessary that, as far as possible all whip should be removed from-the twist,ras this too tends 'to undo the"-work of collecting the fibres which has been effected by the air current. To removesuch whip the axis of the twist tube shouldbe tangential-tothe drawing rolls atthe :pointof theirbite, or in some cases, it-inay be found advisable to cause the yarn to cling more or less to the top roll.

The obj ectof the presenti'nvention is first of all to ensurethat the maximumcollecting and consolidating action is carried out on the yarn or sliver prior to'its passing to' the rotating twist member and a furtherobject is to provide means-for facilitating' the adjustment of thean gle' of run in of the yarn to the drawing rolls.

The present invention comprises a nonrotatingtwist tube having the whorl of-the twistarm mounted onits exterior and-a nozzle directing an annula'r current axially into the twist tube at one end'thereofin the direction of feedingof the yarn through the twist tube, whilst the twist arm engages the yarn at the other end of the non-rotating twist tube. A lead in or guide funnel is preferably provided coaxial'ly with the twist tube and this funnel may form the inner wall of the annular nozzle. The invention also comprises a suitable form of twist arm or fiyer for use in combination with'the device. The invention further comprises a cordance with this invention.

.ed' thereon.

26, 1325. Serial no. 58.758.

carrier frame adjustable angularlyand carrying the air blast supply pipe on which the twist tubes are mounted, whereby on adjusting the carrier, the twist tubes as a group may be adjusted as regards the inclination of their axes and each individual twist tube is also independently adjustable.

The invention is illustrated by way of example in the accompanying drawing, which is a sectionallelevation of the upper part of a ri-ngspinning machine and shows the arrangement of a sin'gle twist tube in ac- It will be understoodthat any suitable number of such twist tubes are arranged side by side inthe same manner as the spindles of a spinning machine.

The ring spinning and cop building mechanisms are located in the machine frame below the apparatus shown in the drawing frames A. and supports the bed plate frame l for the drawing rolls a and Z2, which may be of any suitable type, and-the twist tubes.

G11 the bed plate frame C there is mounted a carrler frame D which has at ltsfront a curved ledge which rests in a groove f on the bed plate frame C. The rear of the carrier frame D is supported on a set pin 7, which may be threaded more or less into the base of the carrier frame D and thereby it is possible to adjust the inclination of this car rier frame together with all the parts mount- The set pin f after suitable adjustment is clamped by means of a lock nut. as shown.

The carrier frame D'formsthe support for UUILHII' blast pipe 79, winch at suitable intervals' on its upper surface, has ports 79 spaced apart at the lateral distance between the twist tubes. On the blast pipe 79, there rest-s a saddle piece 8. It will be understood that there are several such saddle pieces corresponding in number to the number of spindles in the ring spinning machine. The saddle or rocking piece 8 has a tail piece 8 in which a clamping}; screw 8 is threaded, whilst the end of thetail 8 comes under an'adjust ing pin'u threaded in a cross bar k provided on the carrier frame D. A port in the sad die a is adapted to register with a port .79 in the blastpipe 79 and this port in the saddle leads to, a conical nozzle 25 opening downwards in the direction in WhlCl'l the yarn is fed through the twist tube. An oil pocket 8 may also be formed in the saddle s. In the upper part of the nozzle body If, there fitted, preferably with a slight taper, a funnel shaped lead in tube t which carries a nozzle shaped extension 6 extending inside the nozzle t and spaced therefrom, so that the two nozzle bodies 25 and 25 direct an annular stream of air into the front end of the twist tube It. The interior face of the nozzle 2f is machined and'into the lower part thereof, which is parallel, there is tightly fitted the bush h which constitutes the twist tube proper. 'The bush 71. forms a stationary bearing for the whorl w in which, there is tightly fitted a socket d embracing the retaining collar on the lower end of the twist tube and carrying the twist arm d. The yarn is engaged in the twist arm cl in any convenient and well known manner.

The operation of this device is as follows:

The yarn or sliver is introduced at the wide upper end of the funnel t and passes down the central opening and through the twist tube It to engage the twist arm (Z prior to entering the draw rolls 6. The twisting will take place over the whole of this stretch of yarn, but the maximum twist occurs near 7 the arm (1 and falls off as the distance'from the draw roll bite is great-er. It follows from this that the greater part of the twist is effected in the twist tube It and it is thus in this tube that the fibres are most liable to be projected out from the yarn by centrifugal force. Such fibres, if coming in contact with rotating parts are apt to get caught and cause damage by blocking the free passage of the yarn. Owing to the total absence of rotating parts in the twist tube 71. no such danger can arise.' Moreover, the fibres which may be projecting from the yarn are, according to this invention, gently swept into the twist by the axial stroking or brushing action of the annular air current issuing from the blast pipe 79, through port 39 and the annular space between the nozzle bodies t andt A cock 7c operable by means of a yoke 70 controls the annular air current.

The annular air current acts like a geiitle air brush causing the fibres to align themselves with the yarn and also supports the yarn on an air cushion centrally with the twist tube. Whip of the yarn may thus be minimized and the yarn guided in the most advantageous manner tothe twist arm (Z. In order to take full advantage of this arrangement, I provide for the adjustment of the twist tube so that its axis may be arranged tangential to the point of contact of the drawing rolls Z) or slightly inclined one way or the other as may be found most suited for the yarns under treatment. Tliere is first a bodily adjustment of the whole gang of twist tubes mounted in a single carrier frame D and effected by the set pin 7. This adjustment sets the pipe p on which all the saddles s are mounted. Then each individual saddle 8 may be adjusted by slacking back its clamping screw 8 whereby the saddle is free to swing on the pipe 39, then operating the pin it to rock the saddle till the required angular position has been obtained. 7 The clamping screw 8 in the tail 8 is then again tightened so as'to retain the parts firmly in the adjusted position. The clamping screw 5 is non-radial to the pipe? so that it not only clamps the saddle s in angular' position but also causes the upper part of the saddle to bed tightly on the pipe p and prevent leakage of air from the port 5 I claim:

1. A twist tube for use with a ring'spinning machine having in combination, a nonrotating twist tube, an air nozzle directing an annular current of air into the front end of said twist tube, a whorl mounted to rotate on the outside of said twist tube and a twis armdriven by said whorl.

2. A twist tube for use with a ring spinning machine, having in combination an outer nozzle member, an inner member, means for introducing air between said outer and inner nozzle members to form an annular current of air, a non-rotating twist tube located in said outer nozzle member, a whorl rotatably mounted on said twist tube and a twist arm driven by said whorl.

3. In combination with draw rolls for a ring spinning machine, a plurality of independently-pivoted outer nozzle members, an inner nozzle member located concentrically within each outer nozzle member, means for introducing air between said outer and inner nozzle members to form an annular current of air, a non-rotating twist tube'located in each of said outer nozzle members, a whorl rotatably mounted on each of said twist 11o tubes, a twist arm driven by each of said whorls, and means for adjusting the angular position of said nozzle members-as a whole, and of each nozzle member inde pendently.

4:. In combination with draw rolls for a ring spinning machine, a pivotally-mounted carrier frame, 'a plurality of pivotallymounted outer nozzle members mounted on said frame, means for adjusting the angular 12 position of each nozzle member independently, means for adjusting the angular position of said carrier frame and thereby of said nozzle members as a set, an inner nozzle member located concentrically within each 125 outer nozzle member, means for introducing air between said inner and outer nozzle members to form an annular current of air, a non-rotating twist tube located in each of said outer nozzle members, a whorl rotatably 130 mounted on each of said twist tubes, and a twist arm driven by each or said whorls.

5. In combination, a carrier frame, means for adjusting the angular position or said frame, a ported air pipe on said carrier; frame, a ported rocking piece on said pipe, means for rocking and clamping said rock ing piece on said pipe, an annular nozzle communicating with the port in said ported rocking piece, a non-rotating twist tube fixed tightly in said rocking piece, a whorl rotatable on the exterior of said twist tube and a twist arm carried by said whorl.

6. In combination with a ring spinning machine, a supporting bridge, a bed plate frame fixed to said bridge, draw rolls supported in said bed plate frame, a carrier frame resting on said bed plate frame and having a curved front ledge nested on said bed plate frame and a set pin located laterally of said ledge and resting also on the top or the bed plate frame, an air blast pipe mounted in said carrier frame and having ports therein, a ported saddle piece resting on said pipe and having its port registering with the port on the pipe, a cock controlling said port in the saddle piece, an annular nozzle in said saddle piece and communicating with the port therein, a twist tub-e tightly fixed in said saddle piece co-axially with said annular nozzle and in front thereof, a whorl rotatable on the exterior of said twist tube and a twist arm carried by said whorl and projecting from the end of the twist tube to the bite of the draw rolls.

JUL. EMIL VENZEL. 

